Add presentation materials from LCA 2009 talk

[cworth.org] / src / talks.mdwn

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 [[meta title="Talks presented by Carl Worth"]]
 
+# [From click to pixel: A tour of the Linux graphics stack](lca_2009)
+
+The Linux graphics stack can be a bewildering thing. What do all those
+names actually mean (cairo? Mesa? Glucose? UXA? GEM?). How can an
+application designer hope to debug a graphics performance problem?
+This talk provides a simple overview of the 2D and 3D graphics stacks
+for Linux with clear diagrams, and several recipes for debugging
+graphics performance problems at several layers. We conclude with an
+overview of where things are going in the short-term future.
+
+Presented at [linux.conf.au 2009](http://linux.conf.au) in Hobart,
+Tasmania, Australia on 2009-01-21.
+
 # [X Acceleration that Finally Works](lca_2008)
 
 Meaningful hardware acceleration within the X Window System is